add notification and send notification

core/apps/notifications/serializers/notification.py

@@ -0,0 +1,11 @@
+from rest_framework import serializers
+
+from core.apps.notifications.models import Notification
+
+
+class NotificationSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Notification
+        fields = [
+            'token'
+        ]